Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Eliezer Mendel Vanallen, MD

Individual provider Internal Medicine Physician · NPI 1447484779

Dr. Eliezer Mendel Vanallen, MD is a Medical Oncology in Boston, Massachusetts. Qualified in 2007, 19 years ago. Practices with Dana-Farber Cancer Institute, Inc, a 668-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California and Massachusetts.

Years since qualifying
19
Licensed in
CA, MA
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

450 Brookline Ave # D1230
Boston, MA 02215-5418
Phone: (617) 632-6656
Fax: (617) 632-6656
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 243362 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A107423 (CA)

Record details

NPI number1447484779
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 14, 2009
Last updated in NPPESAugust 12, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Dana-Farber Cancer Institute, Inc. — 668 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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